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New fine needle for cholangiography with optional sheath for decompression.

|April 1, 1979

Summary

A novel 45-cm Chiba needle with a 20-cm sheath enables successful percutaneous transhepatic cholangiography. This technique accurately visualizes various anatomical structures and allows for subsequent interventions without complications.

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Area of Science:

Radiology
Interventional Radiology
Medical Imaging

Background:

Percutaneous transhepatic cholangiography (PTC) is an essential diagnostic and therapeutic procedure.
Standard needles may have limitations in accessing deep or complex biliary anatomy.

Purpose of the Study:

To evaluate the efficacy and safety of a modified 45-cm Chiba needle with a 20-cm sheath for PTC.
To assess the utility of this system for visualizing biliary and other intra-abdominal structures.

Main Methods:

A 45-cm Chiba needle with an integrated 20-cm hub sheath was used in 10 patients undergoing PTC.
The needle system was employed for initial localization and subsequent catheter or biopsy needle placement.
Procedures included diagnostic cholangiography and chronic decompression in one case.

Main Results:

Successful percutaneous transhepatic cholangiography was achieved in all 10 patients.
The system effectively localized the biliary tree, vascular structures, cysts, cavities, pelvocalyceal system, and tumors.
Placement of larger drainage catheters or biopsy needles was facilitated.
No complications were reported during or after the procedures.

Conclusions:

The 45-cm Chiba needle with a 20-cm sheath is a safe and effective tool for percutaneous transhepatic cholangiography.
This modified needle system enhances visualization and facilitates subsequent interventional procedures.
It offers a reliable option for complex biliary access and related interventions.

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